Junction Box Labelling

[kody916]

Hello Everyone,

when there are multiple voltages (120VAC & 24VC) present inside the same junction box, which NEC rule dictates the labelling the junction Box? i remember vaguely that a label needs to be put on the junction box which states "multiple voltage sources present" or something like that. but cant remember exactly. any suggestions?

Thank You

 

[hbiss]

First off 120V and 24V can't be in the same junction box. That's the only NEC rule I know.

-Hal

 

[al hildenbrand]

First off 120V and 24V can't be in the same junction box. That's the only NEC rule I know.

Sure they can, just needs to be a barrier between the compartments of the junction box.

AS for the labeling of the box, I don't think the NEC has anything to say about 120 V and 24 V.

 

[LarryFine]

How do RIBs get away with it?

 

[al hildenbrand]

How do RIBs get away with it?

600 V insulation.

 

[electrofelon]

First off 120V and 24V can't be in the same junction box. That's the only NEC rule I know.

-Hal

Sure they can, just needs to be a barrier between the compartments of the junction box.

AS for the labeling of the box, I don't think the NEC has anything to say about 120 V and 24 V.

I think we have to more specific. If that 24v is class 2, I agree, but there is no general restriction that certain voltages be isolated.

 

[GoldDigger]

How do RIBs get away with it?

Simple, IMHO. They are devices, not field wired boxes. A better question is how you stay compliant when you connect to those wires. if the low voltage coil circuit is classified and wired as Class 1 (Chapter 3 methods) it is much easier to comply!